The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
May. 05, 2015
Filed:
Feb. 16, 2011
Zongjie Yuan, Santa Barbara, CA (US);
Eric Tarsa, Goleta, CA (US);
Tao Tong, Oxnard, CA (US);
Ronan Letoquin, Fremont, CA (US);
Bernd Keller, Santa Barbara, CA (US);
Long Larry Le, Morrisville, NC (US);
James Michael Lay, Cary, NC (US);
Randolph Cary Demuynck, Wake Forest, NC (US);
Zongjie Yuan, Santa Barbara, CA (US);
Eric Tarsa, Goleta, CA (US);
Tao Tong, Oxnard, CA (US);
Ronan Letoquin, Fremont, CA (US);
Bernd Keller, Santa Barbara, CA (US);
Long Larry Le, Morrisville, NC (US);
James Michael Lay, Cary, NC (US);
Randolph Cary Demuynck, Wake Forest, NC (US);
Cree, Inc., Durham, NC (US);
Abstract
Lamps and bulbs are disclosed generally comprising different combinations and arrangement of a light source, one or more wavelength conversion materials, regions or layers which are positioned separately or remotely with respect to the light source, and a separate diffusing layer. This arrangement allows for the fabrication of lamps and bulbs that are efficient, reliable and cost effective and can provide an essentially omni-directional emission pattern, even with a light source comprised of a co-planar arrangement of LEDs. Additionally, this arrangement allows aesthetic masking or concealment of the appearance of the conversion regions or layers when the lamp is not illuminated. Some embodiments of the present invention utilize LED chips to provide one or more lighting components instead of providing the components through phosphor conversion. This can provide for lamps that can be operated with lower power and can be manufactured at lower cost. In one embodiment, a red lighting component can be provided by red emitting LEDs as opposed to a red conversion material.